Process for manufacture of tiles



Patented Junel1, 19 29.

' UNITED STATES 1,716,706 PATENT OFFICE.

AMI REY, OF GALAIS, FRANCE.

rnocn sfs'non MANUFACTURE on runs.

K Drawing. Application filed April 25, 1927, Serial No. 186,587, and inFrance April 27, 1926.

The present invention relates to a process for the manufacture of tiles,sheets or covering material in iron or iron metals. It is a known fact,that the great defect of iron is its tendency to rust, and the presentin- 4 vention provides means for obviating all rusting, for giving thesurfaces a determined color and agreeable aspect, andfor diminishing theheat conductivity of the 1 metal.

In carrying my said pjrocessinto efi'ect, the objects such as tiles,covering sheets (plain or worked), fittings, gutters, pipes, ornamentsand the like, are first cleaned and then dip ed into a bath of tar,pitch, bitumen, aspiialt or the like; such substances are solid in thecold stateand will not rust in air,-and they are insoluble in water. The

coating thus formed is quite adherent, and it In the present invention,I take advantage of the agglutinating properties of the coat:

ing itself in order to fix the color. this latter consists of mineralsubstances which are hard, non-freezing, and unaflected by air ordampness, such as various stones or like mineral substances (granite,porphyry,

gneiss, basalt, marble, schist, waste bricks or tiles, natural sand andthe like). 4

The said. material is broken up, ground and sifted, and 'its degree oftenuity is regulated according to needs. A product which traversesa No.60 sieve .but will not pass through a No. 70 will be suitable for mostpurposes. I V

. The resulting color substance is heated in a suitable vessel at atemperature which is considerably above the melting point of the saidcoating; The coated objects are placed in contact with the hot color,upon which .a I

certain ressure 1s exercised. When 1n con-' tact wit the hot color, thesaid coating will melt and will enter between the grains of the color bycapillary action. The grains which are in immediate contact areentirely. covered by the coatingsubstance, and the succeeding grains arepartially coated. Due to .the agglutinating power of the coating all thegrains in contact therewith will be strongly held in place. The outergrains which are only partially covered will offer a free external face,so that the objects will have the desired color.- Alsoythe resultingsurface has the advantage of presenting a dull color, and it has theappearance of theoriginal stone; it will readily retain all pigments orcoats which may be subsequently applied, and it gives the metal an addedprotection against. mechanical and chemical effects.

placed in a well-closedvessel and exposed to the action' ofthe gasproduced by the dry distillation of coal, and when in contact with suchgas, the objects will become heated and will be coated with'an adherentfilm of carbon, which thus oifersan additional protection. Furthermore,tl1is.gas,'which is a powerful reducing agent, will destroy all surfaceoxidation upon the iron. The coloring substance, prepared as above.stated, may be further applied by projecting it uponthe objects coatedwith asphalt.

The herein-described process for the man- Before the objects are coated,they may be ufacture of tiles and the like, consisting in providing asheet of metal of appropriate area, subjecting the metal in a wellclosed vessel'to the action of the gas produced by the dry distillationof coal, covering the treated metal with a coatingn'hich is in-- solublein water and non-rusting, such as asphalt, and then applymg a colorsubstance -in the form of a finely ground mineral, with said colorsubstance heated before application to a temperature above the meltingpoint of the coating and subjecting the color coat to pressure to causecertain of the grains of such coat to be wholly embedded in thefirst'coatin and certain of-the grains v to be partially em edded toleave the unembedded portions as a surface coloringlaycr for the-tile. v

In testimony whereof AMI REY.

I affix my signature.

